Battery module

Abstract

This battery module is provided with: a cell having a connection terminal; and a bus bar that is connected to the connection terminal and has an upright standing part that extends in the direction in which the connection terminal protrudes. The bus bar is connected, via a conductive wire, to an object to be connected, which is provided at a position separate from the connection terminal in the extending direction of the upright standing part. The cell is configured so as to be charged and discharged through the bus bar and the conductive wire.

The invention claimed is: 
     
       1. A battery module comprising:
 a battery cell including a connection terminal; and 
 a bus bar connected to the connection terminal, wherein the bus bar includes an upright portion extending in a direction in which the connection terminal projects, wherein: 
 the bus bar is connected by a wire to a connected body that is arranged at a location separated from the connection terminal in an extension direction of the upright portion; and 
 the battery cell is configured to be charged and discharged through the bus bar and the wire, 
 the bus bar further including an extension that is connected to the upright portion and extends in a direction intersecting the extension direction of the upright portion, 
 the extension includes a basal end and a distal end, which is arranged at an opposite side of the basal end in an extension direction of the extension, wherein the basal end is connected to the upright portion and the distal end is joined with the wire, and 
 wherein the extension is defined by a hollow cylindrical portion. 
 
     
     
       2. The battery module according to  claim 1 , wherein:
 the connected body is arranged on a plate member; and 
 the upright portion is inserted through a through hole of the plate member, and wherein 
 the extension is positioned vertically above the plate member. 
 
     
     
       3. The battery module according to  claim 1 , wherein:
 the extension includes a surface configured to extend in the extension direction of the upright portion and be connected to the wire. 
 
     
     
       4. A battery module comprising:
 a plurality of battery cells arranged in a layout direction to form a battery cell row, wherein each battery cell includes a connection terminal; 
 end plates arranged at two ends of the battery cell row in the layout direction; 
 a bus bar connected to the connection terminal of a first battery cell located at one end of the battery cell row, wherein the bus bar includes an upright portion extending in a direction in which the connection terminal projects and an extension that is connected to the upright portion, the extension extending outside an outer surface of the end plate adjacent to the first battery cell in a direction intersecting an extension direction of the upright portion, wherein: 
 the extension includes a basal end and a distal end, which is arranged at an opposite side of the basal end in an extension direction of the extension, wherein the basal end is connected to the upright portion, and the distal end is connected by a wire to a connected body that is arranged at a location separated from the connection terminal of the first battery cell in the extension direction of the upright portion; 
 a plate member is arranged above the battery cells and includes a through hole opposite to the connection terminal of the first battery cell; 
 the upright portion is inserted through the through hole; 
 the battery cells are configured to be charged and discharged through the bus bar and the wire; and 
 wherein the extension is positioned vertically above the plate member. 
 
     
     
       5. The battery module according to  claim 4 , wherein the extension includes a surface configured to extend in the extension direction of the upright portion and be connected to the wire.